Properties of the Number -102069

One Hundred Two Thousand Sixty-Nine

Basics

Value: -102070 → -102069 → -102068

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11 × 1031

Divisors: 1, 3, 9, 11, 33, 99, 1031, 3093, 9279, 11341

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11000111010110101

Octal: -307265

Duodecimal: -4B099

Hexadecimal: -18eb5

Square: 10418080761

Square Root: 319.4823938811026

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Expansion of (1-3·x+x³)/(1-2·x-x²+x³). A199853

a(n) = 2·a(n-1) + a(n-2) - a(n-3) for n >= 3, starting with a(0) = 1, a(1) = 3, and a(2) = 6. A6356

Expansion of (1-x)/(1-2·x-x²+x³). A77998

T(n,k)=Number of nXk 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing. A223999

3-wave sequence starting with 1, 1, 1. A38196

Let i be in {1,2,3}, let r >= 0 be an integer and n=2·r+i-1. Then a(n)=a(2·r+i-1) gives the quantity of H_7,3,0 tiles in a subdivided H_7,i,r tile after linear scaling by the factor x^r, where x=sqrt((2·cos(π/7))²-1). A187070

Let i be in {1,2,3}, let r >= 0 be an integer and n=2·r+i-1. Then a(n)=a(2·r+i-1) gives the quantity of H_7,1,0 tiles in a subdivided H_7,i,r tile after linear scaling by the factor x^r, where x=sqrt((2·cos(π/7))²-1). A187068

Expansion of x*(1-x)/(1-2·x-x²+x³). A106803

Bottom line of 3-wave sequence A038196, also bisection of A006356. A38223

Number of 7 X n 0..2 arrays with antidiagonals unimodal and rows and diagonals nondecreasing. A224005